His name is not on the ballot, but disgraced developer Solomon Dwek may become a fixture of Jersey City’s upcoming municipal election.

Dwek, who is serving a six-year federal prison sentence for bank fraud, was the confidential informant who helped federal investigators nab crooked pols here in Hudson County and elsewhere during the massive 2009 corruption sweep.

Posing as a crooked developer, Dwek offered city officials FedEx envelopes filled with cash in exchange for assurances that they would assist his purported real-estate deals. His secretly recorded meetings helped land Healy loyalists like Leona Beldini, the former deputy mayor, and Mariano Vega, the former council president, behind bars on corruption charges.

And for Ward E Councilman Steve Fulop, Dwek may as well be a running mate for Mayor Jerramiah Healy, Fulop’s competition in the May 14 mayoral race.

In January 2011, when discussing a Healy contributor who was set to win a city contract, Fulop referred to Dwek. Later, when asked about the possible sale of city-owned property near the Jersey City Medical Center, Fulop warned that Dwek’s dealings with city officials proved the city should be careful in its real-estate ventures.

And on Friday, Dwek’s name came up again, in a statement from the Fulop campaign demanding Healy return cash Dwek gave to the mayor’s campaign during the federal sting.

For the Fulop campaign, Dwek is relevant to the 2013 race because he “revealed the depth of corruption in the Healy administration,” said campaign spokesman Bruno Tedeschi.

In 2009, Healy announced that he was donating about $17,000 in contributions from Dwek to charity.

Fulop now contends that Dwek contributed as much as $55,000, but Healy campaign spokesman Joshua Henne denied the Healy camp is sitting on any additional contributions from the infamous confidential informant.

“Steve Fulop knows full well that money was donated to charitable organizations,” Henne said. “Fulop’s desperate, negative attacks simply confirm that he’ll do and say anything to get ahead.”